Uppipe: more power or not? - Subaru WRX Forum
 
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#1 Old 08-14-2007, 12:20 AM
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Uppipe: more power or not?

Okay, I'm sorry if this is redundant, I searched and didn't see anything, so here it goes...
I've heard conflicting stories as to what the power gains are when putting in an aftermarket uppipe. Some say the turbo spools WAY better, some say just a bit. Some say there's as much as a 15whp gain (gruppe-n says this about the helix uppipe for the LGT), some say there's little or no power increase.
I just want to know, from those of you who have the mod: is there a power increase and does the turbo spool better?
Thanks for the help...
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#2 Old 08-14-2007, 12:46 AM
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any way you can reduce restriction it will help your turbo spool and help with power. with that said an uppipe alone wont show HUGE gains but paired with a good dp and tune it will help out. a catless uppipe also protects your turbo from the possiblity of a piece of the cat breaking off and going throuhg your turbo and ruining it.

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#3 Old 08-14-2007, 10:52 AM
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quite frankly i didnt notice that much(butt hp) after i installed my up-pipe. but i know it had to have gained something somewhere through out the power band.
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#4 Old 08-14-2007, 11:41 AM
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on a stock turbo, the uppipe is not a restriction. Removing the cat (it's already gone 06+) helps with spool because it keeps the exhaust gas a little hotter. Not a large difference anyway. 15whp? Yeah, they're full of shit.

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#5 Old 08-14-2007, 06:01 PM
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Thanks guys...15hp sounded like a joke. I was trying to decide whether to upgrade that now or later and I guess as long as I have the warranty, I'm not too worried about the cat breaking up...so I'll save it for later. Thanks again.
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#6 Old 08-14-2007, 08:20 PM
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Hers the deal with an Up-Pipe (06 and older).. Swapping out the Up-Pipe with a catless aftermarket version will not necessarily gain you Peak Numbers, but Peak Numbers are worthless really.. Where the gains are really make are in midrange.. With out the restrictions of the cat the turbo will spool sooner, thus inprooving exceleration, spool up, and normal day to day driving..

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#7 Old 08-15-2007, 01:53 PM
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Quote:
Originally Posted by LiL Shoaf View Post
Hers the deal with an Up-Pipe (06 and older).. Swapping out the Up-Pipe with a catless aftermarket version will not necessarily gain you Peak Numbers, but Peak Numbers are worthless really.. Where the gains are really make are in midrange.. With out the restrictions of the cat the turbo will spool sooner, thus inprooving exceleration, spool up, and normal day to day driving..
he means 05 and older folks

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#8 Old 08-15-2007, 05:53 PM
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Yup. Was thinking 06 has no Cat in Up-Pipe and typed that instead of 05. MY bad..

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